Unverified Commit 366ff79e authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Mark Brown
Browse files

ASoC: codecs: rx-macro: add runtime pm support 



Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220224111718.6264-13-srinivas.kandagatla@linaro.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c96baa29

sound/soc/codecs/lpass-rx-macro.c

+62 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
#include <linux/init.h>

#include <linux/io.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/clk.h>

#include <sound/soc.h>

#include <sound/pcm.h>
@@ -3601,6 +3602,13 @@ static int rx_macro_probe(struct platform_device *pdev) 
	if (ret)

		goto err_clkout;





	pm_runtime_set_autosuspend_delay(dev, 3000);

	pm_runtime_use_autosuspend(dev);

	pm_runtime_mark_last_busy(dev);

	pm_runtime_set_active(dev);

	pm_runtime_enable(dev);



	return 0;



err_clkout:
@@ -3637,11 +3645,65 @@ static const struct of_device_id rx_macro_dt_match[] = { 
};

MODULE_DEVICE_TABLE(of, rx_macro_dt_match);



static int __maybe_unused rx_macro_runtime_suspend(struct device *dev)

{

	struct rx_macro *rx = dev_get_drvdata(dev);



	regcache_cache_only(rx->regmap, true);

	regcache_mark_dirty(rx->regmap);



	clk_disable_unprepare(rx->mclk);

	clk_disable_unprepare(rx->npl);

	clk_disable_unprepare(rx->fsgen);



	return 0;

}



static int __maybe_unused rx_macro_runtime_resume(struct device *dev)

{

	struct rx_macro *rx = dev_get_drvdata(dev);

	int ret;



	ret = clk_prepare_enable(rx->mclk);

	if (ret) {

		dev_err(dev, "unable to prepare mclk\n");

		return ret;

	}



	ret = clk_prepare_enable(rx->npl);

	if (ret) {

		dev_err(dev, "unable to prepare mclkx2\n");

		goto err_npl;

	}



	ret = clk_prepare_enable(rx->fsgen);

	if (ret) {

		dev_err(dev, "unable to prepare fsgen\n");

		goto err_fsgen;

	}

	regcache_cache_only(rx->regmap, false);

	regcache_sync(rx->regmap);

	rx->reset_swr = true;



	return 0;

err_fsgen:

	clk_disable_unprepare(rx->npl);

err_npl:

	clk_disable_unprepare(rx->mclk);



	return ret;

}



static const struct dev_pm_ops rx_macro_pm_ops = {

	SET_RUNTIME_PM_OPS(rx_macro_runtime_suspend, rx_macro_runtime_resume, NULL)

};



static struct platform_driver rx_macro_driver = {

	.driver = {

		.name = "rx_macro",

		.of_match_table = rx_macro_dt_match,

		.suppress_bind_attrs = true,

		.pm = &rx_macro_pm_ops,

	},

	.probe = rx_macro_probe,

	.remove = rx_macro_remove,